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/*
* Copyright (c) 2006-2024 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-07-21 Rbb666 first version
*/
#include "drv_wdt.h"
#ifdef RT_USING_WDT
/*#define DRV_DEBUG*/
#define LOG_TAG "drv.wdt"
#include <drv_log.h>
cyhal_wdt_t WDT;
static struct ifx_wdt_cfg wdt_cfg =
{
.name = "wdt",
.WDTx = &WDT,
};
static struct ifx_wdt wdt_drv;
static rt_err_t wdt_init(rt_watchdog_t *wdt)
{
return RT_EOK;
}
static rt_err_t wdt_control(rt_watchdog_t *wdt_device, int cmd, void *arg)
{
RT_ASSERT(wdt_device != RT_NULL);
struct ifx_wdt_cfg *cfg;
cfg = wdt_device->parent.user_data;
rt_uint32_t timeout_ms = 0;
switch (cmd)
{
/* feed the watchdog */
case RT_DEVICE_CTRL_WDT_KEEPALIVE:
cyhal_wdt_kick(cfg->WDTx);
break;
/* set watchdog timeout */
case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
{
timeout_ms = *((rt_uint32_t *)arg) * 1000;
rt_uint32_t max_timeout_ms = cyhal_wdt_get_max_timeout_ms();
if (timeout_ms >= max_timeout_ms)
timeout_ms = max_timeout_ms;
/* Initialize the WDT */
int result = cyhal_wdt_init(cfg->WDTx, (rt_uint32_t)timeout_ms);
/* WDT initialization failed. Stop program execution */
RT_ASSERT(result == RT_EOK);
}
break;
case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
timeout_ms = cyhal_wdt_get_timeout_ms(cfg->WDTx);
*(rt_uint32_t *)arg = timeout_ms / 1000;
break;
case RT_DEVICE_CTRL_WDT_START:
cyhal_wdt_start(cfg->WDTx);
break;
case RT_DEVICE_CTRL_WDT_STOP:
cyhal_wdt_stop(cfg->WDTx);
break;
default:
LOG_W("This command is not supported.");
return -RT_ERROR;
}
return RT_EOK;
}
const static struct rt_watchdog_ops ifx_wdt_ops =
{
wdt_init,
wdt_control
};
int rt_hw_wdt_init(void)
{
wdt_drv.cfg = &wdt_cfg;
wdt_drv.wdt_device.ops = &ifx_wdt_ops;
if (rt_hw_watchdog_register(&wdt_drv.wdt_device, wdt_drv.cfg->name, RT_DEVICE_FLAG_RDWR, wdt_drv.cfg) != RT_EOK)
{
LOG_E("wdt device register failed.");
return -RT_ERROR;
}
LOG_D("wdt device register success.");
return RT_EOK;
}
INIT_BOARD_EXPORT(rt_hw_wdt_init);
#endif /* RT_USING_WDT */
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